I believe the confusion, speaking personally, came from well meaning projections of information not focused on my actual question, which was and remains, for software options that tested the integrity of internal hardware like motherboards and their included ports. Given I have bought a suitable cable less than two weeks ago, the connectors were never the issue. Kare On Wed, 12 Jul 2023, James Knott wrote:
On 2023-07-12 18:18, Karen Lewellen wrote:
no one spoke of printer cables. Serial connectors are 9 pin, parallel cables are 25 pin. while old style printer cables use 25 pin as well, there is no, or not to my personal experience a 9 pin connector at all for those printer cables. as a side note allot of external speech synthesizer hardware used 25 pin connectors. and lpt port allocations as well.
I thought you mentioned a parallel port in your first message and in a reply to me you said "connects via serial port on the computer, to a parallel port on the back of the reading edge". I suspect you got confused because while printer ports, on computers, are 25 pin, serial ports, while currently 9 pin, used to be 25 pin. I then mentioned gender, so you could tell one from the other by touch.